CN101340161A - Radio communication device - Google Patents

Radio communication device Download PDF

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Publication number
CN101340161A
CN101340161A CNA2008101281149A CN200810128114A CN101340161A CN 101340161 A CN101340161 A CN 101340161A CN A2008101281149 A CNA2008101281149 A CN A2008101281149A CN 200810128114 A CN200810128114 A CN 200810128114A CN 101340161 A CN101340161 A CN 101340161A
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CN
China
Prior art keywords
communication equipment
radio communication
spherical shell
solar panel
transmit
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2008101281149A
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Chinese (zh)
Inventor
小野濑克也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokin Corp
Original Assignee
NEC Tokin Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Tokin Corp filed Critical NEC Tokin Corp
Publication of CN101340161A publication Critical patent/CN101340161A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1607—Supply circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Photovoltaic Devices (AREA)
  • Casings For Electric Apparatus (AREA)
  • Support Of Aerials (AREA)

Abstract

A radio communication device includes a spherical case, an outer case, and a liquid or gelled substance. The spherical case has a circuit portion for radio communication and a balance anchor located therein. The circuit portion includes a power supply device which has a solar cell and a secondary battery. The outer case has the spherical case located therein. The substance is contained between the spherical case and the outer case. At least a portion of the spherical case which is used as a light entering path, the outer case and the substance are transmissive to light in an optical wavelength range with which the solar cell can generate electricity. Friction between the spherical case and the substance is small so that the spherical case is rotatable within the outer case by the movement of the balance anchor by gravity.

Description

Radio communication equipment
Technical field
The present invention relates to a kind of radio communication equipment, it is equipped with the power supply of self-generating type, and this power supply can pass through solar cell power generation.
Background technology
The radio communication equipment that has two types outdoor application, that is, and by the radio communication equipment of external power source driving and the radio communication equipment that drives by internal cell.Under the situation of indoor use radio communication equipments such as robot control system(RCS), safety system or fabrication, drive by the wire pair radio communication equipment by external power source usually.On the other hand, under the situation of using the radio communication equipment monitoring environment, can use internal cell to power devices, this is because usually at outdoor application equipment, particularly by external power source by the power place of difficulty of electric wire.In this case, use secondary cell as internal cell, and radio communication equipment can be equipped with solar cell.In this case, can carry out the life-span that electric power storage prolongs secondary cell by generating in secondary cell to solar cell.In addition, equipment self can be driven by solar cell.
Yet solar cell is placed in the fixed position in this radio communication equipment.Therefore, when upset or inversion apparatus, the solar cell that is positioned over the equipment upper surface is not by solar radiation.So, suspended the electric power storage in secondary cell, and reduced the operation lifetime of radio communication equipment.
The open No.2004-280449 (hereinafter being referred to as " patent documentation 1 ") of Japanese unexamined patent discloses a kind of equipment, and wherein the inclination angle of solar panel is machinery control.
Yet above-mentioned patent documentation 1 depends on such hypothesis: in order to adjust the inclination angle of solar cell, wherein settled the equipment of solar cell to install with given pose.Therefore, when being inverted or putting upside down equipment, be difficult to adjust the direction of solar cell so that make its suitable irradiate light.In addition, the installation scale is big more, just difficultly more takes measures to prevent that equipment from toppling over.In addition, if use machinery to adjust the position of solar cell, then the scale of machinery is inevitable big, and the cost of building can be high.
In addition, if in communication equipment, used transmit/receive antenna, then transmit/receive antenna is placed on the radio communication equipment and makes the desired antenna directivity of acquisition when equipment is installed with given pose.Therefore, when being inverted or putting upside down equipment, difficulty that the directivity of antenna may change and radio communication may become.
On the one hand, make the present invention and be used to overcome in the prior art the problems referred to above, and one of purpose of the present invention provides a kind of radio communication equipment, the electric energy that this radio communication equipment can stably provide solar cell carries out electric power storage, and can stably carry out radio communication by antenna.
Summary of the invention
According to a first aspect of the invention, a kind of radio communication equipment comprises power-supply device, spherical shell, balance anchor, outer casing and liquid state or colloidal materials.The electricity generate function that is provided by solar cell is provided power-supply device, and the storage function that is provided by secondary cell.In spherical shell, have the circuit part that is used for radio communication, and this circuit part comprises power-supply device.At least a portion of spherical shell is used as the light incident path that leads to solar cell, the light in the certain optical wavelength range of this part transmissive, and solar cell can generate electricity by the light in the described optical wavelength range.The balance anchor is positioned at spherical shell.Outer casing is made of the material of the light in the described optical wavelength range of transmissive, and spherical shell is positioned among the outer casing.Described material is included between spherical shell and the outer casing, and the light in the described optical wavelength range of transmissive.In addition, the friction between spherical shell and the described material is enough little, make spherical shell can be within outer casing according to the balance anchor since the motion of gravity rotate.According to this aspect of the invention, by the balance anchor, spherical shell is maintained fixed angle in liquid state with low friction or colloidal materials, and has nothing to do in the setting angle of outer casing.Therefore, the circuit part that is positioned at spherical shell can always be used with the posture of expectation.
In addition, in the radio communication equipment according to first aspect, solar cell can comprise at least one solar panel that is positioned at spherical shell.And solar panel can be arranged to: when the balance anchor was in settling position, the optical receiving surface of solar panel was towards top or side, and at this moment the balance anchor is positioned at the below at the center of spherical shell.In this mode, because solar panel is fixed on it usually towards certain position that is not other directions of ground surface, this makes secondary cell obtain can stably charging in the sun-exposed environment at equipment.
In addition, according to first aspect, radio communication equipment can comprise transmit/receive antenna, and it is disposed in the plane identical with solar panel.Since antenna be disposed in solar panel near, so it does not need to be exclusively used in the space of antenna, and the therefore reduction on the support space.Simultaneously, owing to relatively easily guarantee near the suitable installation site of antenna solar panel, so it also is applicable to low-frequency band communication.
In addition, according to first aspect, radio communication equipment can comprise transmit/receive antenna, its be disposed in solar panel below.Since antenna be disposed in solar panel the generating surface below, so it can save the space in the radio communication equipment.
In addition, according to first aspect, radio communication equipment can comprise transmit/receive antenna, and it is disposed in side (lateral) face of solar panel.Because this transmit/receive antenna is disposed in the side of solar panel, so it provides the flexibility that fixes up an aerial wire, and is convenient to antenna directivity is adjusted.In addition, can be at a plurality of antennas of the side arrangement of solar panel.In this mode, it can be so that to the use of a plurality of radio bandses.
In addition, the directivity of transmit/receive antenna can be an omnidirectional.Owing to used the transmit/receive antenna of omnidirectional, though when the direction of antenna since for example outer casing be difficult to expect move and when horizontal (horizontal direction) change, it also can realize stable communication.
In addition, transmit/receive antenna can the optical receiving surface of solar panel towards direction on have stronger directivity.Because it not is on the direction of ground surface that the directivity of antenna and solar cell are fixed on, so it can be so that upwards carrying out efficient communication upward, wherein have the communication equipment of wanting communication object and be usually located on this direction.
In addition, described transmit/receive antenna can have the most weak directivity on the center of gravity direction of pointing to the balance anchor from the spherical shell center.By weakening the directivity on the direction of ground surface, reduced the power loss of not placing usually on the direction with communication equipment of wanting communication object, and therefore improved signal emission/receiving efficiency by transmit/receive antenna.
As mentioned above, in radio communication equipment according to a first aspect of the invention, even the posture of outer casing is along with radio communication equipment self is tilted or is inverted and changes, spherical shell also can be in outer casing according to the balance anchor since the motion of gravity rotate.Therefore, it can be at the intended purposes of equipment and the posture that will be positioned at the circuit part of spherical shell basically is fixed in the position of expectation.Therefore, in the radio communication equipment that is equipped with the self-generating type power supply that generates electricity by solar cell, it can support stable power and stable communicating by letter, and no matter how the equipment posture changes.
Above-mentioned and other purposes, feature and beneficial effect of the present invention will obtain more complete understanding by detailed description that hereinafter provides and the accompanying drawing that only provides as by way of example, and therefore not be interpreted as limitation of the invention.
Description of drawings
Fig. 1 is the perspective internal view of the communication equipment of first embodiment of the invention;
Fig. 2 shows the block diagram of circuit part of the communication equipment of first embodiment of the invention;
Fig. 3 A shows the schematic external view of the antenna directivity of communication equipment when common use the in the prior art;
The communication equipment that Fig. 3 B shows prior art is when the schematic external view that turns over when turning 90 degrees;
Fig. 4 shows the schematic external view of antenna directivity of the communication equipment of first embodiment of the invention;
Fig. 5 show second embodiment of the invention transmit/receive antenna and the vertical view of the position between solar panel relation;
Fig. 6 shows the end view according to the transmit/receive antenna of the 3rd execution mode of the present invention and the relation of the position between the solar panel;
Fig. 7 shows the perspective view according to the transmit/receive antenna of the 4th execution mode of the present invention and the relation of the position between the solar panel;
Fig. 8 shows the schematic external view according to the antenna directivity of the communication equipment of the 5th execution mode of the present invention;
Fig. 9 shows the schematic external view according to the antenna directivity of the communication equipment of the 6th execution mode of the present invention;
Figure 10 shows the schematic external view according to the antenna directivity of the communication equipment of the 7th execution mode of the present invention; And
Figure 11 shows the perspective internal view according to the antenna directivity of the communication equipment of the 8th execution mode of the present invention.
Embodiment
The reference example execution mode is described the present invention herein now.One of skill in the art will appreciate that and use instruction of the present invention can realize many replaceability execution modes and the invention is not restricted to shown for explanatory purposes execution mode.
First execution mode
Fig. 1 shows the perspective internal view of structure of the radio communication equipment 1 (hereinafter referred for " communication equipment 1 ") of first embodiment of the invention.Communication equipment 1 comprises the self-generating type power supply by solar cell power generation.
As shown in Figure 1, communication equipment 1 comprises: spherical shell 2; Cuboid outer casing 3, it surrounds spherical shell 2; And the liquid 4 with low friction, it is included between spherical shell 2 and the outer casing 3.Spherical shell 2 and outer casing 3 are enough to the light in the certain wave-length coverage of transmission, and solar cell 5 can generate electricity by the light in this wave-length coverage.For example, spherical shell 2 and outer casing 3 can be formed by transparent acrylic resin.By way of parenthesis, spherical shell 2 can have such structure: make that only be positioned at solar cell 5 (hereinafter will be introduced) opposite and be enough to transmission solar cell 5 as the part of the light incident path that leads to solar cell 5 can be by the light of its wave-length coverage of generating electricity.In addition, liquid 4 also be enough to transmission solar cell 5 can be by the light in its wave-length coverage of generating electricity.
Comprise solar panel 5, circuit part 6 and balance anchor 7 in the spherical shell 2.Balance anchor 7 is positioned at the lower space of spherical shell 2, and solar panel 5 is positioned at the upper space of spherical shell 2, and the optical receiving surface of solar panel 5 is towards the top of housing 2.
According to said structure, make the posture lower space how balance anchor 7 is positioned at of outer casing 3 no matter always towards the ground surface direction owing to place spherical shell 2, so solar panel 5 always keeps horizontal level and towards top.Even communication equipment 1 is installed on the place of inclination, the solar panel 5 that is positioned at equipment 1 still in horizontal position towards top, even and the angle of equipment 1 acutely changes when outer casing 3 for example is squeezed, solar panel 5 also resets to self and immediately again towards top.In this mode, communication equipment 1 can keep solar panel 5 to make the optical receiving surface of solar panel 5 be subjected to solar radiation, and stably realizes electric power storage.
Although solar panel 5 is positioned at the top of balance anchor 7, balance anchor 7 is positioned at the below part of spherical shell 2 in the present embodiment, but solar panel 5 can be positioned at the sidepiece of spherical shell 2 or similarly local in other embodiments, as long as solar panel 5 and balance anchor 7 are not positioned at the same direction with respect to the center of spherical shell 2.In addition, has low friction and be enough to transmission solar cell 5 and can be used as substituting of liquid 4 by the colloid substance of the light in its wave-length coverage of generating electricity.
Fig. 2 shows the block diagram of structure of the circuit part of communication equipment 1, and this circuit part is depicted as the circuit part 6 of Fig. 1.As shown in Figure 2, circuit part 6 comprises CPU part 8, radio communication part 9, transmit/receive antenna 10, power unit 11, secondary cell 12 and solar cell 13.Radio communication part 9 will wirelessly send to other communication terminals by transmit/receive antenna 10 from the digital data signal that CPU part 8 receives.In addition, power unit 11 has the function of power supply with driving CPU part 8 and radio communication part 9, and has the function of in secondary cell 12 electric power storage is carried out in the generating of solar cell 13 generations.
The present inventor draws Fig. 3 A and Fig. 3 B as a reference, and they show the schematic external view of antenna directivity of the communication equipment of prior art, and the communication equipment of the prior art does not have the feature structure of communication equipment 1.Particularly, Fig. 3 A shows the state of equipment when common the use, and Fig. 3 B shows the state of equipment when tipping arrangement 90 is spent.
Simultaneously, Fig. 4 shows the schematic external view according to the example of the antenna directivity of the communication equipment 1 of this execution mode of the present invention.In this execution mode, transmit/receive antenna 10 is arranged in circuit part 6, makes that transmit/receive antenna 10 is horizontal when the balance anchor 7 that is positioned at spherical shell 2 is in settling position, and at this moment balance anchor 7 is positioned at the below part of communication equipment 1.In addition, the directivity of transmit/receive antenna 10 has 8 font formulas in the accompanying drawing.
3A and Fig. 3 B show in the prior art, and transmit/receive antenna 10 is fixed in the housing of communication equipment 14.Therefore, when communication equipment 14 was inverted, the direction of transmit/receive antenna 10 also was changed and its directivity may exceed the direction scope of expectation.So it is difficult that communication may become.Simultaneously, as shown in Figure 4, even communication equipment 1 is squeezed and the posture of outer casing 3 changes, the transmit/receive antenna 10 that is positioned at spherical shell 2 still remains on horizontal level and its directivity is fixed on position shown in Figure 4 basically.Therefore, communication equipment can realize using transmit/receive antenna 10 to carry out stable radio communication.
Second execution mode
Fig. 5 shows the transmit/receive antenna 15 of communication equipment second embodiment of the invention and the vertical view of the relation of the position between the solar panel 5.As shown in Figure 5, transmit/receive antenna 15 is positioned at same level with solar panel 5.The position relation between solar panel 5 and transmit/receive antenna 15, the structure of present embodiment can be identical with the structure of first execution mode.
According to above-mentioned structure, it supports the compact design to solar panel 5 and transmit/receive antenna 15, and obtains the saving on the space.In addition, because transmit/receive antenna 15 is arranged to and makes it center on solar panel 5, thereby guaranteed that the vast of heaven line that is used for low-frequency band communication can easily realize.
The 3rd execution mode
Fig. 6 shows the end view according to the transmit/receive antenna 16 of the 3rd execution mode of the present invention and the relation of the position between the solar panel 5.As shown in Figure 6, according to this execution mode, transmit/receive antenna 16 in communication equipment, be positioned at solar panel 5 below.The position relation between solar panel 5 and transmit/receive antenna 16, the structure of present embodiment can be identical with the structure of first execution mode.
According to above-mentioned structure, transmit/receive antenna 16 can not disturb the irradiation to solar panel 5.In addition and since transmit/receive antenna 16 be disposed in solar panel 5 below, so it supports the compact design to solar panel 5 and transmit/receive antenna 16, and obtain the saving on the space.
The 4th execution mode
Fig. 7 shows the lateral perspective according to the transmit/receive antenna 17 of the 4th execution mode of the present invention and the relation of the position between the solar panel 5.As shown in Figure 7, in this execution mode, a plurality of transmit/receive antennas 17 are positioned at the side of solar panel 5.The position relation between solar panel 5 and transmit/receive antenna 17, the structure of present embodiment can be identical with the structure of first execution mode.Because transmit/receive antenna 17 is positioned at the side of solar panel 5, so they can not disturb the irradiation to solar panel 5.In addition, by arranging several antennas 17, it can be so that the adjustment of the use of a plurality of bandwidth and antenna directivity.
The 5th execution mode
Fig. 8 shows the schematic external view according to the antenna directivity of the communication equipment 18 of the 5th execution mode of the present invention.As shown in Figure 8, in communication equipment 18, used theaomni-directional transmission/reception antenna 19.Except the directivity of transmit/receive antenna 19, the structure of communication equipment 18 can be identical with the structure of first execution mode.
In the first embodiment, when the angle of transmit/receive antenna 10 changed owing to the motion of outer casing, the position of antenna was owing to balance anchor 7 is got back to its home position.Yet if the direction of transmit/receive antenna 10 changes on a horizontal plane, the antenna directivity in the horizontal plane also may change.At this moment, in communication equipment 18, use omnidirectional antenna 19.Therefore, even the direction of antenna 19 changes on horizontal plane, it still can realize stabilized communication.
The 6th execution mode
Fig. 9 shows the schematic external view according to the antenna directivity of the communication equipment 20 of the 6th execution mode of the present invention.As shown in Figure 9, communication equipment 20 use the optical receiving surface of solar panel (not shown) towards direction (that is, direction) up and down have transmit/receive antenna 21 than highly directive.Except the directivity of transmit/receive antenna 21, the structure of communication equipment 20 can be identical with the structure of first execution mode.Be similar to first execution mode, in the present embodiment, the solar panel (not shown) is always towards top.Communication equipment 20 be installed on the face of land and the terminal of communicating by letter with communication equipment 20 be positioned at communication equipment 20 above situation under, communication equipment 20 can be orientated from communication equipment 20 to the power loss that reduces waste by the directivity that makes antenna.
The 7th execution mode
Figure 10 shows the schematic external view according to the antenna directivity of the communication equipment 22 of the 7th execution mode of the present invention.As shown in figure 10, communication equipment 22 uses in the direction of pointing to the center of gravity of balance anchor 7 from the center of spherical shell 2 and has the transmit/receive antenna 23 of weak directivity.Except the directivity of transmit/receive antenna 23, the structure of communication equipment 22 can be identical with the structure of first execution mode.Be similar to first execution mode, in the present embodiment, the posture of solar panel (not shown) and transmit/receive antenna 23 always remains on the fixed position by the rotation of spherical shell 2, because at this moment the balance anchor moves down.Be installed at communication equipment 23 under the situation on the face of land, it can be by reducing antenna 23 reduces waste in the face of the directivity of ground surface power loss.
The 8th execution mode
Figure 11 shows the perspective internal view according to the communication equipment 24 of the 8th execution mode of the present invention.Show a spherical shell 2 in the above-described first embodiment and be arranged in the such structure of outer casing 3.Be different from first execution mode, as shown in figure 11, communication equipment 24 has two spherical shells 2 that are positioned at outer casing 25.What need not many speeches is to arrange three or more spherical shells 2 in outer casing 25 by changing the shape and the size of outer casing 25.
According to described the present invention thus, should clear and definite embodiments of the present invention can change in many ways.This change should not regarded as to have broken away from the spirit and scope of the present invention, and because all such modifications are conspicuous for those skilled in the art, so these modifications also are regarded as being included within the scope of the claims of enclosing.

Claims (8)

1. radio communication equipment comprises:
Power-supply device, electricity generate function that is provided by solar cell and the storage function that is provided by secondary cell are provided for it;
Spherical shell, has the circuit part that is used for radio communication therein, described circuit part comprises described power-supply device, at least a portion of described spherical shell is used as the light incident path that leads to described solar cell, light in the certain optical wavelength range of this part transmissive, described solar cell can generate electricity by the light in the described optical wavelength range;
The balance anchor, it is positioned at described spherical shell;
Outer casing, its material by the light in the described optical wavelength range of transmissive constitutes, and described spherical shell is positioned among the described outer casing; And
Liquid state or colloidal materials, it is included between described spherical shell and the described outer casing, the light in described liquid state or the described optical wavelength range of colloidal materials transmissive;
Friction between wherein said spherical shell and the described material is enough little, make described spherical shell can be within described outer casing according to described balance anchor since the motion of gravity rotate.
2. radio communication equipment according to claim 1, wherein:
Described solar cell comprises at least one solar panel that is positioned within the described spherical shell, and
Described solar panel is arranged to: when described balance anchor was in settling position, the optical receiving surface of described solar panel was towards top or side, and at this moment described balance anchor is positioned at the below at the center of described spherical shell.
3. radio communication equipment according to claim 2 further comprises transmit/receive antenna, and it is disposed in the place identical with described solar panel.
4. radio communication equipment according to claim 2 further comprises transmit/receive antenna, its be disposed in described solar panel below.
5. radio communication equipment according to claim 2 further comprises transmit/receive antenna, and it is disposed in the side of described solar panel.
6. according to each described radio communication equipment among the claim 3-5, the directivity of wherein said transmit/receive antenna is an omnidirectional.
7. according to each described radio communication equipment among the claim 3-5, wherein said transmit/receive antenna the optical receiving surface of described solar panel towards direction on have stronger directivity.
8. according to each described radio communication equipment among the claim 3-5, wherein said transmit/receive antenna has the most weak directivity in the direction of pointing to the center of gravity of described balance anchor from the center of described spherical shell.
CNA2008101281149A 2007-07-04 2008-07-03 Radio communication device Pending CN101340161A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007175906 2007-07-04
JP2007175906A JP2009016516A (en) 2007-07-04 2007-07-04 Radio communication device

Publications (1)

Publication Number Publication Date
CN101340161A true CN101340161A (en) 2009-01-07

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Application Number Title Priority Date Filing Date
CNA2008101281149A Pending CN101340161A (en) 2007-07-04 2008-07-03 Radio communication device

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US (1) US20090011721A1 (en)
EP (1) EP2012435A2 (en)
JP (1) JP2009016516A (en)
CN (1) CN101340161A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109066098A (en) * 2018-08-06 2018-12-21 南京邮电大学 A kind of wave absorbing device based on gravitational field regulation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010065904A2 (en) 2008-12-05 2010-06-10 Gatekeeper Systems, Inc. Solar powered transmitter
CN105867430A (en) * 2016-06-06 2016-08-17 曹燕红 Novel signal receiving device for smart home

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US3286358A (en) * 1962-03-19 1966-11-22 Jordan P Smokowski Encased float
US5532677A (en) * 1994-07-01 1996-07-02 Miller; John E. Variable distance marker
US5644078A (en) * 1995-10-02 1997-07-01 Ahdoot; Ned Optical gyroscope
JP2004280449A (en) 2003-03-14 2004-10-07 Toshiba Corp Data measurement device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109066098A (en) * 2018-08-06 2018-12-21 南京邮电大学 A kind of wave absorbing device based on gravitational field regulation
CN109066098B (en) * 2018-08-06 2021-04-06 南京邮电大学 Wave absorber based on gravity field regulation and control

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US20090011721A1 (en) 2009-01-08
JP2009016516A (en) 2009-01-22
EP2012435A2 (en) 2009-01-07

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